Adjustable shaking screen



June 26, 1923.

11,460,284 E. S. STADELMAN ADJUSTABLEISHAKING SCREEN Filed Aug. 3, 1922 2 Sheets-Sheet 1 IIVI/E/VTOI? Edward 5. Siam/mam ATTORNEYS iqE.

June 26, 1923.

E. s. STADELMAN ADJ-USTABLE SHAKING SCREEN Filed Aug. 1922 2 Sheets-Sheet 2 l/VVE/VTOR Eazza/dISzade/ma/z ATTORNEYS" EDWARD S. STADELEIAN, 01E CHICAQO, ILLINOIS.

ADJUSTABLE SHARING SCREEN.

' Application filed august 8,1922. Serial 1%. 579,401.

To all whom it may concern:

Be it known that I, EDWARD S. STADEL- l? Man, a citizen of the'United States, residare hanger rods ing in the city of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Adjustable Shaking Screen, of which the following is a specification.

My invention relates to shaking screens, and more particularly to shaking screens which'are adapted for the screening of various materials, such as coal, ore, coke, sand,

gravel and stone, etc. The object of my invention is to provide an improved, strong and adjustable construction.

In the accompanying drawings Fig. 1 is an end elevation, partially broken away, of a screen embodying my invention;

Fig. 2 is a side elevation of the same, also partially broken away;

Fig. 3 is an end elevation partially broken away, of a modification; and

Fig. 4 is an end elevation of the same.

My construction permits of a wide range of adjustment in the movement of the screen and this, in connection with certain other features, gives a better screened product than has been heretofore possible. This refinement of product and the simplicity of design of the machine, combined with the adaptability obtained from the wide range of adjustability, are the principal advantages of my invention.

The main frame of my shaking screen consists of two sideframes K connected at.

the bottom by cross beams S and S. I prefer to make each side frame of a flanged referably situated next to each main bear mg A, and hanng3 on these two eccentrics whose lowerends support the screen shaft 1. Mounted on this shaft I by means of pivot bearings J is the screen frame G This screen frame G is also supported at each end by two links, L,

L, reaching from the front and back edges of {the screen frame to a point on the upper art of the hanger rod E. In each of these inks near the screen frame end there is a row-of holes 10, 0, through wlnch a pin can; be inserted into the screen frame ta fasten the screen frame and link together. y varying the connection by means of these series of holes, the slope-of the screen frame can be adjusted at will. In the frame G is laid a perforated screen plate Gr.

On each end of the screen shaft I, I pivot a feed link F The other end of this link is pivotally fastened to one or other of a, series of holes 1, 2, 3 in the side frame of the machine bv a pin M. Theseholes 1', 2, 3 are preferably above the level of the screen shaft. I may also rovide counterbalance wheels D on the drive shaft for the eccen trics.

In operation the material to be sorted is fed onto the sloping screen at the upper end and the reciprocatory movements of the screen propel the oversize material along-the surface of the inclined screen to the lower edge, while the small sizes are shaken through the screen. In my construction when the drive shaft B is turned, the eccentrics C, C, impart a substantially vertical reciprocatory movement to the screen shaft .I through the hanger rods E, while the links F impart a longitudinal feeding movement to the screen which advances the material along the same. The precise curvilinear figure described by a point on the screen is va-. riable, depending upon the position of pin M and the length of the feed link I and its point of attachment to the screen. The horizontal component of the motion of the screen may thus be varied with corresponding variation of the feed of the material along the screen at each cycle of movement.

Adjustment of the inclination of the screen plate furtherincreases the adaptability of the machine. If there is only one screen in the machine the counterbalance wheels D make the operation of the machine more apart, of course, so that the two screens thusv balance each other in a measure. By using difi'erent meshes in the two screen frames and feeding onto the upper screen as before, I may obtain three screenings, one size throu h the bottom screen and one size delivere from the surface of each of the to impart movement to It is obvious that the length of the link F may be'varied, and its point of attachment to the screen shifted, to accommodate the change inlength of the link, toward one edge or the other of the-screen instead of being placed at the suspension axis 1 as shown. Such a variation in the point of connection of the link F to the screen makes it possible to further vary the throw of the screen and the travel of the material on the screen.

The details of construction shown are merely exemplary of the underlying thoughts of my invention, which may be embodied in various structures without departmg from what I claim as my invention. claim:

j 1. A shaking screen having a drive shaft, a screen frame,'and means suspending said screen frame from said shaft and tending the screen frame from the drive shaft, in combination with adjustable means restricting said screen frame to curvilinear motion and other means ad ustably controlling the inclination of said screen frame.

2. A shaking screen having a drive shaft,

7 a screen frame'and means suspending said screen frame from said shaft and tending to impart substantially vertical movement to the screen frame from the drive shaft, in combination "with two independentl adjustable means, one restricting said rame to curvilinear motion and the other controlling the inclination of said frame.

3. A shaking screen having a drive shaft,

eccentrics on said shaft, suspension means mounted on said eccentrics, and a screen frame tiltably suspended from said suspension means, in combination with adjustable links governing the tilt of said screen frame, and radius links pivotally connected to the suspension axis of said screen frame and restricting the latter to curvilinear motion.

4. A shaking screen having a drive shaft, a screen frame and means suspending said screen frame from said shaft and tending to impart substantially vertical movement to the screen frame from the driveshaft, in combination with two independently adjustable means, one restricting said frame to curvilinear motion and the other controlling the inclination of said frame, and. counterbal- EDWARD S. S TADELMAN. 

